Download Lesson 3.2 Answers - Fort Thomas Independent Schools

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Name
Name
3-1B
page 2
3-2A Lesson Master
Questions on SPUR Objectives
See pages 199–201 for objectives.
SKILLS Objective A
In 14–16, use the number lines below.
In 1–8, compare, using >, <, or =.
<
=
>
5. −
>
7.
16
__
3
1. 5
9
3. __
12
24
3
__
32
25
__
24
=
>
=
<
− __46
16
2. − __
2.7
___
3.6
4. 3 __38
7
6. __
31
10
− __
96
28
___
124
4
8. __
64
35
__
36
13
__
4
3
__
32
1
107 and 108
14. a. What is the interval between each tick mark on the top number line?
b. List the endpoints of the highlighted section on the top line.
c. Label the dots on the middle line.
b. List the endpoints of highlighted section of the middle
number line.
0.1
107.3 and 107.4
c. Label the dots on the bottom line.
2·2·2·2·3·3
2·2·2·2·5·7
b. Find the prime factorization of 560.
9
__
0.01
107.31 and
107.32
b. List the endpoints of the highlighted section on the bottom
number line.
17. Which letter (if any) corresponds to the given number?
y
5
4
3
2
3
25
9
a.
10. __
21
B
1
B
none
c. (−4.5, −1.5)
e. (−3.5, 2.7) none
56
11. __
a.
35
27
47,000
13. _____
1,000
1
__
b.
_8
7
a.
5
b.
1,000 b.
= 47
47
__
1
20
44
14. Does ___
= __
? Justify your answer.
187
85
44
20
__
Yes; Sample: ___
187 and 85 rewritten in lowest
20
4
44
___
__
terms are each equal to __
17 . So 187 = 85 .
In 15 and 16, write two fractions equivalent to the given fraction. Samples:
31
62
20
__
4
__
__
− __
14
28
18 , − 90
16.
,
15. −
D
434
___
196
4
then you could say that
24
25
a. (3.9, 2.2)
7
17. Fill in the blanks with the smallest whole numbers possible.
If 548 out of 685 dentists recommend Slide Floss for their patients,
2 3 4 5 x
C
_3
b.
2
__
9
A
1
25 24 23 22 21
21
E
F
22
23
35
In 10–13, a. write the greatest common factor of the numerator and
denominator, then b. rewrite the fraction in lowest terms.
25
12. ___
a.
675
16. a. What is the interval between each tick mark on the bottom
number line?
G
Objective G
144
c. Rewrite ___
in lowest terms.
560
15. a. What is the interval between each tick mark on the middle
number line?
H
PROPERTIES
9. a. Find the prime factorization of 144.
5
out of
dentists
recommend it.
G
F
C
b. (−3.9, 2.7)
d. (−4.5, −1.7)
f. (3.9, −2.2)
Transition Mathematics
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Transition Mathematics
160
UCSMP_SMP08_NL_TM1_TR1_C03_157-1160 160
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Name
3-2B Lesson Master
SKILLS
Objective A: Order and compare decimals and fractions.
In 1–16, compare, using >, <, or =.
=
<
3. −
>
5.
7. 5 =
>−
9. −
=
11.
=
13.
<
15.
21
__
3
1. 7
7
__
8
3
__
4
47
__
8
5
__
27
14
__
27
121
___
99
2
__
16
>
4.
=
<
6.
8. 3 > −
<−
10. −
12. −
=−
<−
14 −
>
16.
42
__
81
132
___
108
32
__
64
16
__
32
44
21. ___
121
5.5
___
8.8
2
__
3
125
23. ___
700
1
__
6
1
__
7
PROPERTIES
5
__
27
14
__
81
27
__
14
108
___
56
_3
5
11
a.
25
a.
a. 2,600
a.
52,000
25. _____
2,600
7
__
2
125
___
25
page 2
In 19–26, a. write the greatest common factor of the numerator and
denominator, then b. rewrite the fraction in lowest terms.
15
19. __
35
1
__
2
16
__
81
3-2B
42
__
6
2. 14
48
__
64
48
__
64
27
___
3.6
Questions on SPUR Objectives
7
28
20. __
63
b.
4
__
11
5
__
b.
28
270
24. ___
210
b.
20
15,000
26. _____
65,000
b.
7
6
a.
30
a.
5,000
a.
a.
30
22. __
42
b.
b.
b.
b.
_4
9
_5
7
_9
7
3
__
13
In 27 and 28, are the two fractions equal? Justify your answer.
22
11
= __
? Justify your answer.
27. Does __
65
33
100
___
25
No; Sample: In lowest terms,
3
__
21
22
__
_1
65 ≠ 3
60
28. Does __45 = __
? Justify your answer.
75
Objective G: Use the Equal-Fractions
Yes; Sample:
Property to rewrite fractions.
17. a. Find the prime factorization of 80.
Copyright © Wright Group/McGraw-Hill
b. Find the prime factorization of 150.
80
c. Rewrite ___
in lowest terms.
150
18. a. Find the prime factorization of 126.
b. Find the prime factorization of 420.
126
c. Rewrite ___
in lowest terms.
420
2·2·2·2·5
2 · 3 ·__8 5 · 5
15
2·3·3·7
2 · 2 · 3 ·__
5·7
3
15
60
_4 • __
__
5
15 = 75
In 29–32, write two fractions equivalent to the given fraction.
5
29. __7
66
31. __
78
10
__
14
33
__
20
__
28
11
__
,
39
,
5
30. − __
11
210
32. − ___
270
13
Sample:
15
− __
33
105
− ___
135
,
30
− __
66
35
− __
45
,
In 33 and 34, fill in the blanks with the smallest whole numbers possible.
33. In a poll of 960 students, 840 said they eat dessert with their lunch.
You could say that
out of
students eat
dessert with their lunch.
10
7
8
34. A veterinarian reported that 291 of her 485 clients bought flea
preventatives for their cats and dogs. Therefore,
out of
clients buy flea preventatives.
5
Transition Mathematics
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Transition Mathematics
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Transition Mathematics
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